Windows 10: Cannot connect to network in Hyper-V when using default network

Discus and support Cannot connect to network in Hyper-V when using default network in Windows 10 Virtualization to solve the problem; I have a Hyper-V VM which refuses to connect to internet when using the default network switch, but connects fine if I use an external switch.... Discussion in 'Windows 10 Virtualization' started by cereberus, Sep 13, 2018.

  1. cereberus Win User

    Cannot connect to network in Hyper-V when using default network


    I have a Hyper-V VM which refuses to connect to internet when using the default network switch, but connects fine if I use an external switch.

    Unfortunately, there is something screwy in Windows 10 since 1803 as my broadband download speeds nosedives when using an external virtual switch.

    If I use the default switch, my broadband download is fine.

    I tried using trouble shooting and network reset but they fall over with no IP address assigned.

    Any ideas?

    :)
     
    cereberus, Sep 13, 2018
    #1
  2. Matthew.Hart.TMG Win User

    Hyper-V networking

    Windows 10 Pro, Build 10586.71. Hyper-V installed. All was working well, and then I got a chipset update from Dell. Installed the update and rebooted computer. After that networking was not working correctly, windows showed limited connectivity. I looked
    a little to roll back the driver update, but Windows did not show a new Nic card driver and the chipsets I looked at also did not show a current date. The Dell Command update program does not provide a way to uninstall updates.

    I tried to access hyper-v switch manager but it returns an error that "an error occurred while trying to retrieve a list of virtual switches". Also tried using the powershell cmdlet but got a general error.

    I accessed the networking center and deleted the Hyper V adapter, then edited my LAN card's config disabling the two Hyper V protocols and enabling the rest. This let me get back on-line with my computer. I have tried uninstalling the Hyper V feature,
    reboot, reinstall - but I am still unable to access the switch manager. I then removed the feature again, re-named the C:\ProgramData\Microsoft\Windows\Hyper-V directory, rebooted, added the feature again. This time (obviously) none of my VM's show up but
    I'm still unable to access the switch manager.

    There is no critical data in my Hyper V, I use it for testing, re-creating issues, learning, etc. Is there a way for Windows 10 (or something designed for server 2012 that will apply) that I can use to fully reset the Hyper v networking, or fully rest all
    of hyper v so I can get it working again? I do use the workstation heavily, it's my work computer so it would be very difficult to impossible to reinstall the OS.

    Thoughts and suggestions appreciated.
     
    Matthew.Hart.TMG, Sep 13, 2018
    #2
  3. DC91360 Win User
    Hyper V network issue

    So I'm trying to configure a new Hyper-V on my Windows 10 server. On the wizard, i get to 'Configure Networking' and I click the drop down on the connection to choose my network and it only has a 'Not Connected' option so I can't select a network (see image
    below).

    If I continue without selecting a network I get the error: Hyper-V encountered an error trying to access an object on the computer because the object was not found. (see second image below).

    I've gotten the same error on my workstation and my laptop.

    I have a network connection on both so I'm a bit lost. Any suggestions?


    Cannot connect to network in Hyper-V when using default network a3546304-d8bc-4147-8230-354d045e99c4.png



    Cannot connect to network in Hyper-V when using default network db62a860-fe11-4d9f-8e70-b530946c0ee3.png
     
    DC91360, Sep 13, 2018
    #3
  4. EdTittel Win User

    Cannot connect to network in Hyper-V when using default network

    Hyper-v virtual switch breaks my network


    Kari: I'm going to add this tip: disable Hyper-V - restart PC - re-enable Hyper-V as a suggested (potential) fix for default switch issues to my recent blog post on that topic. Thanks for working this through with the OP.
    --Ed--
     
    EdTittel, Sep 13, 2018
    #4
Thema:

Cannot connect to network in Hyper-V when using default network

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